Brake-shoe.



.l. KINZER.

B'RAKE SHOE.

APPLICATION FILED NOV. 13. I916- Pate11ted Mar. 20, 1917.

WITNESSES UETED STATES PATENT @Fls JOHN JACOB KINZER, OF WILDWOOD,PENNSYLVEaNIA, ASSIGNOR TO PITTSBURG BRAKE SHOE COMPANY, OF PITTSBURGH,PENNSYLVANIA, A C-ORPOEATIGN QF lPENNSYL- VANIA.

BRAKE-SHOE.

Specification of Letters Patent.

Patented Mar. 29, 1917.

To all whom it may concern.

Be it known that 1, JOHN JACOB Krnzmz, a citizen of the United States,and resident of VVildwood, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement in Brake Shoes;and I do hereby declare the following to be a full, clear, and exactdescription thereof.

My invention relates to brake-shoes, and has special reference tobrake-shoes which are provided with a separate back for fitting againstand supporting the body or wheel bearing portion of the shoe.

The object of my invention is to provide a cheap, simple and efiicientform of a separable backfor a brake-shoe which will be formed of metal,and of such a material and shape for being easily and quickly attachedto the body of the shoe, as well as one which can be easily and quicklydetached from such body when the body is worn out or for any otherpurpose. A further object of my invention is to provide such a separateback, whereby the body or wheel bearing portion of the shoe will besecurely and firmly held by such back, notwithstanding the form of suchbody, as well as such a back, which will permit of its being used overagain, after the body has been worn out or removed from the back.

To these ends my invention consists, generally stated, in the novelarrangement, construction and combination of parts, as hereinafter morespecifically set forth and described and particularly pointed out in theappended claims.

To enable others skilled in the art to which my invention appertains toconstruct and use my improved brake-shoe, I will describe the samemorefully, referring to the accompanying drawing, in which I Figure 1 is aside elevation of a brake-shoe embodying my invention;

Fig. 2 is an end elevation of the same;

Fig. 3 is a cross-section on the line 3-3 of Fig. 2;

Fig. 4 is a cross-section on the line l 1 of Fig. 2;

Fig. 5 is a plan view of the back before bent to finish to form; and

Fig. 6 is a side elevation of the same.

Like symbols of reference herein indicate like parts in each of thefigures of the drawing.

As illustrated in the drawing, A shows my improved brake-shoe, whichcomprises the supporting back member a, body or wheel bearing portion 6,which is supported by such back, and the supporting lug 0, through whichthe brake-shoe is connected in the usual manner to the ordinary approvedbrake-head or hanger (not shown).

The back member a is cut to the size desired from a piece or sheet ofspring metal,

such as steel, to form the blank (not shown), and then such blank ispressed or stamped to shape to form the curved back-wall 1, the bearingsurfaces 2, with its recesses 3, and the flange portion or end wall l,

After the back member a has been so formed, the supporting lug o isconnected to the shoe A in any suitable manner, and can be formed ofmetal, such as steel. As shown, the lug c is separated from the backwall1, and is attached thereto by having supporting legs or standards 5thereon passed through slots 6 in such back-wall. The ends 7 of suchlegs 5 are bent under such wall and against the same to hold the lug cto such back-wall.

The body or wheel bearing portion Z) can be formed of any suitablematerial, such as metal, or composition of materials, and can be formedof one piece or a number of pieces of sections or blocks, as described,such as is shown, described and claimed in my applications filedDecember 30, 1915, Serial Nos. 69,377, 69,378 and 69,37 9, such piece orpieces being so shaped or formed for having the proper curvature to thewheel when secured in place within the shoe A.

In the formation of my improved brakeshoe A, the curved back-wall 1 issprung suflicicntly open in any suitable manner, so that the body 6 canbe placed between the end walls t on said back wall and then such backis allowed to spring back to shape. This will cause the back-wall 1 andthe end walls 4 thereon to engage tightly and firmly against the body 7)and end faces 7 on such body, respectively, to thereby securely clamp orhold such back and body members to gether and thus form the finishedbrake-shoe A. In thus applying the back-member a to the body 5 suitableseats or recesses 8 can be formed in the back wall 9 of such body forthe reception of the ends 7 on the legs 5 of the lug c, which willthereby allow such back wall to fit neatly and completely against theback-wall 1 of the back member a. The back-wall 9 of the body .5 canalso be provided with the seat 10, within which the back wall 1 of theback member a fits, to thus enable a smooth back to be formed on theshoe A, and also assist in holding the back member and body togetherwhen such back member is connected or clamped to such body, as abovedescribed.

When the body 6 is worn out or down to the limit, such body can beremoved easily and quickly by supporting the ends 4. of the clampingback member a, and then pressing down on the convex side of such member,which will tend to spring out the curved back and open the same. thebody I) to be dropped out or conveniently and readily removed from theback member a, thereby allowing such back to spring back to shape andleaving the same in absolutely good condition, thus enabling it to beused over again as above described in clamping similar bodies for anumber of times. v

It will be evident that various forms of body members can be used andwhen sections or blocks are used to form the body member of the shoe,they can be previously formed to shape for forming the completed bodywhen the back member is clamped or secured around the same. It will alsobe evident that suitable sections or blocks can be used with fillingmaterial between the same, to form such body member and such fillingmaterial may be plastic.

Various other modifications and changes in the design and constructionof my improved brake-shoe, and in the back employed, may be resorted to,without departing from the spirit of the invention or sacrificing any ofits advantages.

t will thus be seen that after my improved brake-shoes have been in useand have become worn down on their bodies, they can be returned to themanufacturer to enable the back-member to be used over again by removingthe body-member therefrom, and without injuring or fracturing suchback-member, which will permit the body members to be used with the sameback a number of times, and thereby greatly cheapen the cost ofmanufacture of this class of shoes.

It will also be seen that my improved brake-shoe can be easily andquickly manufactured, assembled for use and taken apart for permittingthe continued use of the back member after the body of the same has become worn or for any other cause, while such shoe as formed with suchseparate and removable back will also be strong and durable when in useand will be able to withstand knocks or blows of any kind. The shoe willalso permit of use until its body is practically worn entirely away, andits This will allow back member will not be permanently attached to thebody, but will have a clamping 7 connection therewith, so that such backmem her being formed of spring metal will enable it to spread open toreceive the body for clamping or removing such body.

What I claim as my invention and desire to secure by Letters Patentis- 1. In a brake-shoe, the combination with the wheel bearing portion,of a back member for holding said portion, said back member beingcapable of retaining and permitting the removal of said portion by aspring action.

2. In a brake-shoe, the combination with the wheel bearing portion, of aback member formed of spring metal for holding said portion, said backmember being capable of retaining and permitting the removal of saidportion by a spring action.

3. In a brake-shoe, the combination with the wheel bearing portion, of aback member capable of retaining and permitting the removal of saidportion by a spring action, and having means thereon for holding saidportion and member together.

4. In a brake-shoe, the combination with the wheel bearing portion, of aback member formed of spring metal, said back member being capable ofretaining and permitting the removal of said portion by a spring actionand having means thereon for holding said portion and member together.

5. In a brake-shoe, the combination with the wheel bearing portion, of aback member capable of retaining and permitting the removal of saidportion by a spring act-ion and having means thereon for clamping saidportion and member together.

6. In a brake-shoe, the combination with the body or wheel engagingmember, of a back member formed of spring metal, said back member beingcapable of retaining and permitting'the removal of said portion by aspring action and having means thereon for clamping said portion andmember together.

7 In a brake-shoe, the combination with the body or wheel engagingmember, of a back member capable of retaining and permitting the removalof said portion by a spring action and having means on the ends of thesame for holding said portion and member together.

8. In a brake-shoe, the combination with the body or wheel 'engagingmember, of a back member formed of spring metal, said back member beingcapable of retaining and permitting the removal of said portion by aspring action and having means on the ends of the same for holding saidportion and member together.

9. In a brake-shoe, the combination with the body or wheel engagingmember, of a back member capable of retaining and permitting the removalof said portion by a spring action and having means on the ends of thesame for clamping said portion and member together.

10. in a brake-shoe, the combination with the body or wieel engagingmember, of a back member formed of spring metal, said back member beingcapable of retaining and permitting the removal of said portion by aspring action and having means on the ends of the same for clamping saidportion and member together.

11. In a brake-shoe, the combination with the body or wheel engagingmember, of a back member engaging therewith, said back member beingadapted to be sprung against and removed from said body member andhaving a flange portion thereon for engaging with said body member toclamp said members together.

12. In a brake-shoe, the combination with the body or wheel engagingmember, of a back member engaging therewith, said back member beingformed of spring metal for being sprung against and removed from saidbody member and having a flange portion thereon for engaging with saidbody member to clamp said members together.

13. In a brake-shoe, the combination with the body or wheel engagingmember, of a back member engaging therewith, said back member beingadapted to be sprung against and removed from said body member andhaving flange portions 011 the ends of the same for engaging the ends ofthe body member to clamp said members in place.

14. In a brake-shoe, the combination with the body or wheel engagingmember, of a back member engaging therewith, said back member beingformed of spring metal for being sprung against and removed from saidbody member and having flange portions on the ends of the same forengaging the ends of the body member to clamp said members in place.

15. In a brake-shoe, the combination with the body or wheel engagingmember having a recess in the back of the same, of a back memberengaging with said body and having its back wall fitting within saidrecess, said back member being adapted to be sprung against and removedfrom said body member.

16. In a brake-shoe, the combination with the body or wheel engagingmember having a recess in the back of the same, of a back memberengaging with said body and having its back wall fitting within saidrecess, said back member being formed of spring metal for being sprungagainst and removed from said body member.

In testimony whereof, I, the said JOHN Jason KINZER, have hereunto setmy hand.

JOHN JACOB KINZER.

Witnesses 2 J. N. Comm, J OHN F. VVILL.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. G.

